Vineet Suryan 13fc7ef932 onnx: Use system installed Eigen to avoid hash mismatch failure
Eigen’s download for the commit referenced by ONNX Runtime v1.16.3 was
updated upstream, so the SHA-256 embedded in ORT’s CMake scripts no
longer matches and the build aborts with a hash-mismatch error.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/9229>
2025-06-30 13:13:38 +00:00

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ONNX Build Instructions
### Build
1. do a recursive checkout of [onnxruntime tag 1.16.3](https://github.com/microsoft/onnxruntime)
2. `$SRC_DIR` and `$BUILD_DIR` are local source and build directories
3. To run with CUDA, both [CUDA](https://developer.nvidia.com/cuda-downloads) and [cuDNN](https://docs.nvidia.com/deeplearning/cudnn/archives/cudnn_762/cudnn-install/index.html) libraries must be installed.
```
$ cd $SRC_DIR
$ git clone --recursive https://github.com/microsoft/onnxruntime.git && cd onnxruntime && git checkout -b v1.16.3 refs/tags/v1.16.3
$ mkdir $BUILD_DIR/onnxruntime && cd $BUILD_DIR/onnxruntime
$ apt-get update && apt-get install -y libeigen3-dev
```
1. CPU
```
$ cmake -Donnxruntime_BUILD_SHARED_LIB=ON -DBUILD_TESTING=OFF -Donnxruntime_BUILD_UNIT_TESTS=OFF -Donnxruntime_USE_PREINSTALLED_EIGEN=ON -Deigen_SOURCE_PATH=/usr/include/eigen3 $SRC_DIR/onnxruntime/cmake && make -j$(nproc) && sudo make install
```
2. CUDA
```
cmake -Donnxruntime_BUILD_SHARED_LIB=ON -DBUILD_TESTING=OFF -Donnxruntime_BUILD_UNIT_TESTS=OFF -Donnxruntime_USE_CUDA=ON -Donnxruntime_CUDA_HOME=/usr/local/cuda -Donnxruntime_CUDNN_HOME=/usr/local/cuda -DCMAKE_CUDA_ARCHITECTURES=native -DCMAKE_CUDA_COMPILER=/usr/local/cuda/bin/nvcc -Donnxruntime_USE_PREINSTALLED_EIGEN=ON -Deigen_SOURCE_PATH=/usr/include/eigen3 $SRC_DIR/onnxruntime/cmake && make -j$(nproc) && sudo make install
```
3. Intel oneDNN
3.0 install [intel oneDNN](https://www.intel.com/content/www/us/en/developer/tools/oneapi/onednn.html)
3.1 clone, build and install [Khronos OpenCL SDK](https://github.com/KhronosGroup/OpenCL-SDK.git). Build dependencies for Fedora are
`sudo dnf install libudev-devel libXrandr-devel mesa-libGLU-devel mesa-libGL-devel libX11-devel intel-opencl`
3.2 build and install `onnxruntime` :
```
cmake -Donnxruntime_BUILD_SHARED_LIB=ON -DBUILD_TESTING=OFF -Donnxruntime_BUILD_UNIT_TESTS=OFF -Donnxruntime_USE_DNNL=ON -Donnxruntime_DNNL_GPU_RUNTIME=ocl -Donnxruntime_DNNL_OPENCL_ROOT=$SRC_DIR/OpenCL-SDK/install $SRC_DIR/onnxruntime/cmake && make -j$(nproc) && sudo make install
```